On-Premise APIs
Reference materials on how to use local APIs (static library) & dynamic library (DLL on Windows, shared library on Unix).
Melissa Address Key (MAK)
Learn about Melissa's unique digital keys for addresses, individuals and businesses that keep data up to date.
Subscriber Support
Melissa Enterprise subscribers submit technical support requests.
Customer support portal account required to access our support services. Have your Customer ID ready in order to verify account.
Lookups Support
Melissa Lookups users submit questions, comments, and feedback related to Lookups.
Global Offices
Contact Melissa locations for sales, technical support & general information.
Address Coding Support
Having trouble coding an address, or receiving unexpected results?
Result Codes
Descriptions of the results returned by our products so you know exactly what was done to your data.
Web Services Status
Dashboard showing real-time status, response times and outage history.
Melissa Knowledge Center
Access resources and solutions to visualize and understand your data.
How do I contact support?
You can contact Melissa Support in 4 ways:
Chat: Click on the 
icon at the bottom of the page, and select the contact support option (Disable blockers to ensure smooth experience).
Call: 1-800-635-4772 Option 4.
Email: Tech Support
Customer Support Portal: Access Portal
How about a one-time subscription?
Easy! After your purchase, select "Off" from the Auto-Renew Plan's dropdown list on the subscription page.
How does a subscription work?
A monthly subscription of 5,000 lookups is good for either 5,000 lookups or for one month, whichever comes first. A subscription runs for either the number of lookups or for the period of time specified.
Does Melissa have a refund policy?
Yes, Melissa does have a refund policy. Please visit our Melissa Refund Policy page to read about how our refunds work and to fill out our Refund Request form.
What is address validation vs. verification?
Validation is the process of confirming that a specific address exists. Verification goes an extra step: it compares an address against trusted reference data to confirm that mail can be delivered to the address. The verification process can also make corrections to the address and standardize the format. Melissa Data’s solutions provide both address validation and verification.
What happens when a subscription runs out?
It renews at the same level as your current plan unless you have specified another plan or have turned the renewal off. Need to change plans? Change it on the subscription page.
